.banner {
    width: 100%;
    height: 457px;
    border-top: 2px solid #e4393c;
    margin: 0 auto;
    position: relative;
    z-index: 6;
    overflow: hidden;
  }

  .banner > .imgBox {
    width: 500%;
    height: 100%;
    display: flex;
    position: absolute;
    left: 0;
    top: 0;
  }
  .banner > .imgBox > li {
    flex: 1;

    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 100px;
    color: #fff;
  }

  .banner > .pointbox {
    width: 200px;
    position: absolute; 
    left: 50%;
    transform: translateX(-50%);
    border-radius: 15px;
    z-index: 99;
    display: flex;
    align-items: center;
    justify-content: space-evenly;
    bottom: 5px;
  }

  .banner > .pointbox > li {
    position: relative;
    float: left;
    width: 15px;
    height: 15px;
    background: #333;
    margin: 0 5px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 2;
    color: #fff;
    text-align: center;
    line-height: 16px;
    font-size: 12px;
  }

  .banner > .pointbox > li.active {
    background-color: red;
  }

  .banner:hover > div {
    display: flex;
  }

  .banner > div {
    width: 30px;
    height: 40px;
    background-color: rgba(0, 0, 0, .3);
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    color: #fff;
    cursor: pointer;
    display: none;
  }

  

  .banner > div:hover {
    background-color: rgba(0, 0, 0, .5);
  }

  li > img {
    width: 100%;
    height: 100%;
    display: block;
  }